Re: [coLinux-users] Is USB supported?

[Sean C. <sea...@co...>]

Robert,

I finally had a chance to look at this again.  The line you added to 
your xml file seems to be missing the beginning.

dmdiage.exe reported my usb device as K:\Device\HardDisk1\DP(1)0-0+3

I added:

<block_device index="2" enabled="true" />

I then started coLinux and did the following:

mkdir /mnt/usb
mount -t vfat /dev/cobd2 /mnt/usb

I got the following error:

mount: /dev/cobd2:  Can't read Superblock

Its formatted Fat32.

Any thoughts?

Thanks,

Sean

Robert Citek wrote:
> 
> Hello Sean,
> 
> On Monday, May 17, 2004, at 19:00 US/Central, Sean Covel wrote:
> 
>> I'd appreciate any information you have.  I'm on Win2k, coLinux 
>> 20040509, and the Gentoo "delux" image.
> 
> 
> I can't find my notes anywhere.  Off the top of my head, you need to get 
> the tool called dmdiag.exe.  IIRC, you get this from Microsoft but 
> google to be sure.  Install it and run it.  Then insert your USB stick 
> and run it again.
> 
> Here's an example when I use my USB stick.  Here's a very abbreviated 
> portions of dmdiag.exe output before:
> 
> ---------- Drive letter to device name, QueryDosDevice() ----------
> 
>            D: \Device\CdRom0
>            A: \Device\Floppy0
>            C: \Device\HarddiskVolume1
> 
> Here's a very abbreviated portions of dmdiag.exe output after:
> 
> ---------- Drive letter to device name, QueryDosDevice() ----------
> 
>            D: \Device\CdRom0
>            E: \Device\Harddisk1\DP(1)0-0+3
>            A: \Device\Floppy0
>            C: \Device\HarddiskVolume1
> 
> Notice the new device E:\.  That's my USB stick.  I then add this line 
> to my defaults.colinux.xml:
> 
> enabled="true" />
> 
> The index number will change depending on how many devices you already 
> have defined and will be accessible within colinux as /dev/cobd2  (as in 
> _co_linux _b_lock _d_evice 2.  After I start colinux, I can mount the 
> usb stick like so:
> 
> # mkdir /mnt/usb
> # mount /dev/cobd2 /mnt/usb
> UMSDOS 0.86k (compatibility level 0.4, fast msdos)
> # dir /mnt/usb/
> total 2620
> drwxr--r--    3 root     root        16896 Jan  1  1970 .
> drwxr-xr-x    5 root     root         4096 May 18 00:32 ..
>  ...
> # umount /mnt/usb
> 
> This is a simple way for Windows to communicate with coLinux.  However, 
> only one system can be accessing the device at a time.  So, you will 
> need to unmount before Windows can see it and all Windows or files that 
> are accessing the device must be closed on the Windows side before you 
> can mount it again.
> 
> Hope this helps.  The above is tested on a Win2K machine running coLinux 
> 20040509 with the Debian image.  If you get USB to work for you, I'd 
> like to encourage you to write up your experiences and post them on the 
> wiki, especially if you are using a different host OS, snapshot, or image.
> 
> Regards,
> - Robert
> 
>